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package VcardTest;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.swing.JFileChooser;
import javax.swing.filechooser.FileNameExtensionFilter;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

public class Images {

    public Images() {
    }

//    public static void main(String[] args) {
//// 测试从Base64编码转换为图片文件
//
//        String strImg = "这里放64位编码";
//        GenerateImage(strImg, "D:\wangyc.jpg");
//
//// 测试从图片文件转换为Base64编码
//        System.out.println(GetImageStr("d:\wangyc.jpg"));
//
//    }

    public static String GetImageStr(String imgFilePath) {// 将图片文件转化为字节数组字符串，并对其进行Base64编码处理
        byte[] data = null;

// 读取图片字节数组
        try {
            InputStream in = new FileInputStream(imgFilePath);
            data = new byte[in.available()];
            in.read(data);
            in.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

// 对字节数组Base64编码
        BASE64Encoder encoder = new BASE64Encoder();
        return encoder.encode(data);// 返回Base64编码过的字节数组字符串
    }

    public static boolean GenerateImage(String imgStr) {// 对字节数组字符串进行Base64解码并生成图片
        if (imgStr == null) // 图像数据为空
        {
            return false;
        }
        //System.out.println(imgStr+"end\n");
        String temp[] = imgStr.split("\r\n ");
        String image2 = new String();
        for (int i=0;i<temp.length;i++){
            image2 = image2+temp[i];
        }
        System.out.println(image2+"end");
        BASE64Decoder decoder = new BASE64Decoder();
        try {
// Base64解码
            byte[] bytes = decoder.decodeBuffer(imgStr);
            for (int i = 0; i < bytes.length; ++i) {
                if (bytes[i] < 0) {// 调整异常数据
                    bytes[i] += 256;
                }
            }
// 生成jpeg图片
            OutputStream out = new FileOutputStream("D:\\git\\Contacts\\Java\\Contacts\\1.jpg");
            out.write(bytes);
            out.flush();
            out.close();
            return true;
        } catch (Exception e) {
            return false;
        }
    }
}
